Polypeptide, application thereof and medicine containing polypeptide

The invention discloses a polypeptide, application thereof and a medicine containing the polypeptide, and relates to the technical field of polypeptide research, and the amino acid sequence of the polypeptide is shown as SEQ ID NO: 1-4. The polypeptide provided by the invention is an artificially synthesized polypeptide, has relatively strong free radical scavenging ability, and can reduce the level of reactive oxygen species (ROS) of human fibroblasts after UVB irradiation, increase the cell viability of the human fibroblasts after UVB irradiation, reduce cell death and cell apoptosis of the human fibroblasts and relieve human fibroblast aging after UVB irradiation; therefore, the compound can be applied to an ultraviolet radiation protection technology and related medicines. The polypeptide is convenient to artificially synthesize, has the potential of preventing and treating skin ultraviolet injury, and can be widely popularized. 本发明公开了一类多肽及其应用以及含该类多肽的药物，涉及多肽研究技术领域，该多肽的氨基酸序列如SEQ ID NO:1-4所示。本发明提供的多肽为人工合成多肽